Anhedonia is a noun that refers to the inability to feel pleasure.

Our word of the day comes directly from the Greek word for ‘without pleasure.’ Anhedonia may be used in a clinical sense to describe a psychiatric condition or it may be used informally, for example:

My loss in the ping-pong tournament last week left me in a state of anhedonia for two or three days. Even apple pie didn’t give me pleasure. Of course, a few days and apple pies later, I was feeling my usual buoyant sense.